Bridge?

[bbq]

I've heard a lot but i don't really know what it's. How to connect as the bridge people? Does anyone have any pic/instruction ?

Another silly question.
I have a power amp carver A500x rated 250w@8ohm, 400w@4ohm but there's no switch to select, so how do i switch back and forth or how do i know which one i'm using at?
Thanks

[zarrdoss]

some amps you can bridge from lets say two channels to one putting more power to one speaker than two, some amps are not made to be bridged.

amps usually put out more power the lower the ohms go there is no switch it it determined by your speakers Impedance that you have hooked up to it.

[bbq]

So, if my speakers rate 4ohm then the amps will automatically play at 4ohm which is 400w in my case?

[zarrdoss]

So, if my speakers rate 4ohm then the amps will automatically play at 4ohm which is 400w in my case?

yep!

[kawizx9r]

some amps you can bridge from lets say two channels to one putting more power to one speaker than two, some amps are not made to be bridged.

amps usually put out more power the lower the ohms go there is no switch it it determined by your speakers Impedance that you have hooked up to it.

Pretty much summed it all up for you. Don't bridge an amp that is not capable of being bridged, and do not run an amp at a lower impedance than it can handle as this will result in damage to the amp and/or speaker(s). Also depending how you wire your speakers (series/parallel), that can also change the impedance, and don't forget dual voice coiled drivers regarding car audio!

[bbq]

There're some amps have the switch for the ohm. for example i select 4ohm for the amps and speakers are 8ohm, will the amps kill the speakers?
my brother has Parasound HCA-1500A (http://positive-feedback.com/Issue4/hca1500.htm) this amps killed 2 pairs of the JBL floor speakers which rated 400w. the amps blown the horn tweeters and the volume he played wasn't even close to half way, it's aroud a bit more than 1/4. how could it be?
and now he bought the horn tweeters made for cars@4ohm to replace the blown ones and they work fine. the sub@8ohm and horn tweeter is 4ohm lol

[kawizx9r]

As stated, play an amp at the impedance level the speakers are rated at and only IF the amp can handle it. Sorry to hear bout the dead speakers....RIP

[zarrdoss]

the switch is just mainly protection for your receiver or amp I would suggest setting to the lowest because speakers, even rated at 4 ohms will often go lower while playing music. But the output of the amp is always determined by the ohms of what speakers you have hooked up, not a switch.

[bbq]

the output always determined by what speakers you have hooked up not a switch.

Thanks

[appadv]

Even though the switch is for protection, it does make a difference when driving 4 ohm speakers.

Make sure it is set in the correct setting!!

[bbq]

Here's my last question in this thread :)

The amps rated 2->4->8ohms while some speakers use 6ohmz, so what impedance level the amps plays?

[thuffman03]

It is just the impedance or resistance the speaker has. If your amp is good down to a 4 ohm speaker it will be fine with anything above.

Here is a good artical that covers what I think you are asking:

http://www.prestonelectronics.com/audio/Impedance.htm